baber/WOPTO huggingface dataset:
Patent GB-745905-A (GB)
Title: Improvements in or relating to pressure-ratio sensitive mechanisms
Inventor: WEBB RICHARD HARVEY
IPC: F04D27/02
Filed: 1952-09-16
Abstract: 745,905. Fluid-pressure servomotor-control systems. ROLLS-ROYCE, Ltd. Nov. 30, 1953 [Sept. 16, 1952], No. 23284/52. Class 135. A mechanism responsive to the ratio between the pressure at two sources of gaseous pressure comprises a conduit connected to one of the sources having two restrictive orifices in series of which at least the downstream orifice is choked and one of the orifices is of variable area and a pressure-responsive device having a first area subjected to the pressure at the higher source, a second area subjected to the pressure at the lower source or the pressure between the orifices, whichever is the lower, and a third area subjected to the pressure at the lower source or the pressure between the orifices, whichever is the higher, the pressure load on the first and second areas being in the same sense and opposite to that on the third area, and the pressure-responsive device being connected to the variable area orifice so that on movement of the pressure-responsive device due to out-ofbalance pressure loads thereon the variable area orifice is adjusted to restore the pressureresponsive device to a state of balance. As shown, the invention is applied to adjust the angle of guide vanes 23 of a compressor 2 in accordance with the ratio between its inlet and outlet pressures. The outlet pressure passing through a conduit 1 having a fixed restrictive orifice 3 in series with a variable choked orifice 4 opening to the atmosphere and controlled by a needle valve 5 connected to the piston 16 of a servomotor 17 supplied with operating fluid directly to its left-hand space 18 through a pipe 19 and indirectly to its right-hand space 20 through a restriction 21. Exhaust from the space 20 is controlled by a leak-off valve 15 carried by a lever 14 connected to the rod 12 of a pressure-responsive device 13 comprising a pair of diaphragms 6, 9. Compressor outlet pressure acts on the outer face of the diaphragm 6, the pressure between the orifices 3, 4 on the outer face of the diaphragm 9 and compressor inlet pressure, i.e. atmospheric pressure, on the inner faces of the diaphragms. Should, e.g., compressor outlet pressure increase, the pressure between the orifices will also increase and acting on the larger area diaphragm will open the leakoff valve 15 to relieve pressure in the space 20 to permit rightward movement of the piston 16 to increase the opening of the orifice 4 and at the same time adjust the angle of the guide vanes 23 through a mechanical linkage 24. The increased opening of the orifice 4 reduces the pressure beneath the diaphragm 9 and restores the pressure-responsive device to a state of balance. The diaphragms may be replaced by a pair of interconnected pistons or by a differential piston. Specification 736,003 is referred to.
Patent GB-231088-A (GB)
Title: Improvements in or relating to the manufacture of keys for pianos, organs or other analogous instruments
IPC: G10C3/12
Filed: 1924-10-02
Abstract: 231,088. Davies, E. K., and Shenstone & Co., Ltd. Oct. 2, 1924. Veneering.-In making pianoforte or like keys, the sheet or sheets of celluloid or the like are shaped to the form of one or more white keys before affixing them to a keyboard blank which is subsequently sawn into separate keys, thus obviating the necessity for removing the celluloid from those parts of the blank which form the black keys. The celluloid sheets, which may be of the form shown in Fig. 1, so as each to cover an octave of white keys, are placed on a hollow jig 3, Fig. 2, having locating-stops 6, 7 which project into the slots 2. The keyboard blank is then moistened with amyl acetate and clamped down on the celluloid, steam being passed through the chambers 4. The subsequent cooling may be hastened by passing cold water through the chambers 4. The top surface of the jig, or a separate apertured plate placed thereon under the celluloid, is preferably marked in such a way that the markings are impressed on the surface of the celluloid so as to form guide lines for use in the severing of the blank into keys.
Patent GB-752610-A (GB)
Title: Improvements relating to gear pumps
IPC: F16N13/20
Filed: 1954-08-11
Abstract: 752,610. Gear pumps. SATZGER, E. Aug. 11, 1954 [Aug. 11, 1953], No. 23308/54. Class 110(2) A gear pump, Fig. 1, comprises gears 1, 2 provided with grooves to engage the pins 9, 11 of shafts 7, 10 respectively; the shaft 10 constituting a rotary slide valve having passages 22, 23 and a groove 13. Fluid is sucked through passages 18, 17 and fed to the. space 20 at the left hand end of the member 10 and thence through the passages 22, 23, 13 to conduits 24, 25 communicating with an outlet bore 28 and the suction side of the pump respectively. The pump is adjusted by a set screw 27 operating, if desired, against the action of a spring disposed in the passage 20. In a modification, Fig. 3, the pump discharges into a conduit 29 communicating by way of an oblique passage 30 in the valve 31 with an outlet conduit 28 and a recirculation conduit 25, and the outlet 28 being connected to the bore 34 by a conduit 36 and the valve being controlled by a spring-loaded member 38 as shown. In a modification of the embodiment described with reference to Fig. 3 (see Fig. 4, not shown), the conduit 25 is disposed to the left of the conduit 24 in order to reduce the delivery of the pump upon an increase of the discharge head.
Patent GB-1027696-A (GB)
Title: Non-return valve arrangement for pipe-lines
IPC: F16K15/03
Filed: 1963-06-12
Abstract: 1,027,696. Valves. DINGLERWERKE A.G. June 12, 1963 [June 15, 1962], No. 23308/63. Heading F2V. The closure member 8 of a flap valve pivots about an axis 7, within a body section 2, to seat against an annular packing 6 of a complementary body section 1. The closure member 8 is rotated by an external operating lever and may thereby be locked in the closed position or balanced in the open position within a recess 9 within the body section 2 when projections 10, 11 on the closure surface preserve the continuity of the pipe line interior cross-section. The operating lever may be detached and introduced into the projection 15 as a carrying handle. Pressure equilibrium on both sides of the closure member may be obtained via passages 12 controlled by a screw adjustment 13.
Patent GB-1148794-A (GB)
Title: Forming balls from powder
Inventor: SIRIANNI AURELIO FREDERICK
IPC: F16C33/32
Filed: 1967-05-19
Abstract: 1,148,794. Regular particles and coatings from powder. CANADIAN PATENTS & DEVELOPMENT Ltd. 19 May, 1967, No. 23325/67. Heading C1A. [Also in Divisions B3 and C7] Regular rounded particles, such as spheres or ellipsoids, are produced from finely divided powders by agitation in a two-phase liquid system in a container 20 to 90% filled by volume and having rounded inner surfaces to form dispersed agglomerates of the powder and to shape the agglomerates by continued impact and ricocheting action against the rounded surfaces. The second and minor phase has a greater affinity for the powder, but preferably less tendency to wet the container walls than the first. The particles are isolated from the first phase and may be freed from the second phase and sintered. The powdered material may be metal oxides or the carbides, borides, nitrides and silicides of Ti, Zr, Cr, Ta, Mo, W or U, alumina or silica. The use of tungsten carbide with a minor amount of cobalt results in the production of balls suitable for use in ball-point pens. Suitable combinations of liquids are carbon tetrachloride, hydrocarbons or halogenated hydrocarbons as the first phase with water as the second and water as the first with nitrobenzene or benzaldehyde as the second. The second liquid and powder must be dispersed in the first liquid if the size of the balls is to be controlled. This dispersion may be achieved by adding the second liquid as frozen particles to be melted during agitation or as an emulsion or by using a liquid dispersing aid, ultra-sonic vibration being useful in obtaining and maintaining suitable dispersion. Premature coalescing of the powder particles may be avoided by applying a coating, such as wax, which will be removed during the subsequent process. The container is then shaken to form agglomerates of the powder in the second liquid and to round these by repeated impact with the walls of the container. The rounded particles are then separated from the first liquid and may be freed of second liquid by heating and sintered. Coatings may be applied to particulate substrates insoluble in either liquid by adding the substrate, in the form of seed balls, to the initial dispersion. In certain cases the substrate may later be removed from the product. For example sodium chloride may be coated with tungsten carbide using saturated brine as second liquid and the salt subsequently leached out with water. By use of a finely divided removable material the porosity of the spheres may be varied.
Patent GB-429323-A (GB)
Title: Improvements in or relating to electric fires, ornamental plaques or the like, for mounting upon panels or slabs
IPC: F24C15/30
Filed: 1934-08-13
Abstract: 429,323. Plaques. BRAY, A. E., and SLATE SLAB PRODUCTS, Ltd., Stevenage Wharf, Fulham, London. Aug. 13, 1934, No. 23364. [Class 11] [See also Groups XI and X] A plate or plaque 4 is mounted in an opening in a panel 1 of ornamented slate, marble, or plate glass, by means of spring clips 8 and a screw clamp comprising a screw 10 loosely mounted in the plate and a screwed plate 12 adapted to engage the back of the panel. When the screw is loosened the plate 12 drops behind the casing 3 and the plate 1 can be tilted forward and withdrawn.
Patent GB-383328-A (GB)
Title: Improvements in electromagnetic devices for use in weak magnetic fields
IPC: C21D1/78
Filed: 1931-08-19
Abstract: The core material claimed in the parent Specification comprises a nickel-iron alloy of equal parts which is cold-stretched after the final heating so as to reduce its cross section by not more than 50 per cent, preferably by 25 per cent.
Patent GB-667217-A (GB)
Title: An improved toothed coupling
IPC: F16D3/18
Filed: 1949-09-09
Abstract: 667,217. Universal joints. STOECKICHT, W. G. Sept. 9, 1949 [July 26, 1949], No. 23407/49. Class 80 (ii). The teeth 25, 27 of a coupling having inner and outer members 23, 28 in the form of spur gears are lubricated via passages 35 leading to the roots of the inner set of teeth 25, a continuous centrifugal flow of lubricant over the tooth working surfaces being provided to prevent lodgment of foreign matter therebetween. As shown, applied to a double coupling having a bolted-up intermediate outer sleeve 28, oil supplied via pipes 36, 37 to the internally hollowed rims of driving and driven gears 22, 23 is distributed by the passages 35 and, after flowing across the gear teeth, discharged via bores 38 in the sleeve 28 and via the open ends of the sleeve. Sleeve locating rings 30, 31 which do not interfere with the free flow of the oil are provided. To promote the distribution of oil suitably over the teeth, the tips 39 of the outer teeth 27 may be axially hollowed and bevelled off towards their working flanks, as shown in Figs. 1a and 1b respectively. In Fig. 1 (not shown) the invention is applied to a double tooth coupling having a unitary intermediate sleeve with external gear teeth engaging internal teeth on flanged driving and driven members, the oil being supplied to the interior of the sleeve, into which the oil-distributing passages open, from an annular reservoir which is bolted externally to one flanged member, replenished by a pipe analogous to the pipe 37 and communicates with the sleeve interior via ducts through the corresponding flange. The oil escapes from either end of the gear teeth as before, being led off from the axially outer ends of the teeth by radial ducts through the flanges.
Patent GB-912153-A (GB)
Title: A device for protecting vacuum pumps
Inventor: DELANEY FRANCIS DESMOND
IPC: A61M1/00
Filed: 1960-07-05
Abstract: 912,153. Vacuum pumps; raising liquids. GENITO-URINARY MANUFACTURING CO. Ltd. June 7, 1961 [July 5, 1960], No. 23425/60. Classes 8(1) and 102(2). [Also in Group XXIX]. Prevention of access of excess moisture into a vacuum pump 5 drawing from a vessel 6 into which a liquid 7 is aspirated is effected by the closing of a normally open valve 11 secured to a cuff 9 slidably mounted on a portion 8 of the pump intake duct 4 and having secured thereto between flanges 13, 14 thereof an absorbent pad 10 which when saturated with moisture carried over from the vessel 6 becomes so impermiable to. air flow that the resultant pressure differential causes the cuff to lift and hence the valve 11 to assume its closed position. In normal operation air traverses apertures 18 in the rim of the valve 11 and the cuff is retained in its lower position by a stop 20.
Patent GB-376064-A (GB)
Title: Improvements in folding steps for vehicles
IPC: B60R3/02
Filed: 1931-08-20
Abstract: 376,064. Vehicle steps. HARVEY & CO., Ltd., M. and CUBLEY, H., Glebeland Works, Walsall. Aug. 20, 1931, No. 23447. [Class 108 (i).] In folding steps for vehicles of the type in which the step is connected to an attachment member, adapted to be secured to the vehicle, by links the step member is provided with two side members 7 connected to the attachment plate 1 by two pairs of links 13, 14 one pair of which are connected to the outer surfaces of the members 7 and the other pair to the inner surfaces. The side members 7 are also stepped at their inner ends so as to provide a recess 11 on the inner surface and a projection 12 on the outer surface, the recesses receiving the ends of the links 13 and the projections 12 serving to co-operate with the links 14 to limit the folding or extending motion of the step. The step may be formed with a handle portion 10 and the attachment plate 1 is of angle section.
Patent GB-306368-A (GB)
Title: Improvements in or relating to flyers for spinning machines
IPC: D01H7/28
Filed: 1928-08-15
Abstract: 306,368. Thomson, R. B. Aug. 15, 1928. Spindle apparatus.-One or each of the legs of a flyer is provided with a rightangled bend B adapted to engage the yarn and so disposed that the yarn is maintained in substantially continuous contact with the flyer from a point at or near the boss and is thus held clear of the bobbin head, whereby longer bobbins may be used or shorter flyer legs and spindles with bobbins of normal length.
Patent GB-633576-A (GB)
Title: Improvements in or relating to glazing to glazing bars
IPC: E04D3/08
Filed: 1947-08-27
Abstract: 633,576. Glazing bars. STANDARD PATENT GLAZING CO., Ltd., ATKINSON, G., and BOTTOMLEY, W. H. Aug. 27, 1947, No. 23624. Class 20 (iii)] A glazing bar of inverted T or uniform crosssection has a vertical web 3, 4 on one or both sides of the horizontal glass supporting flanges 1, with a thickened portion 5, 6 along the free edge of each vertical web, and a centrally arranged thickened portion 11 at the intersection of the web and the glass supporting flanges. The bar may be made of light-weight metal such as aluminium. The glass 2 is supported on the upturned edge 8 of the flanges 1 and abuts against flanges 7 on the vertical webs 3. Edges 9 similarly formed and parallel to the edges 8 form channels under the glass and serve to prevent the ingress of water, provide a condensation channel, and make the flanges 1 more rigid. A third edge 10 may also be provided. The web 4 may be dispensed with, as in Figs. 2 and 5, and the thickened portion 11  drilled and tapped to receive attachment screws. At the ends the flanges 1 may be turned up as at 13 to prevent the glass sliding down the bar.
Patent GB-1165115-A (GB)
Title: Production of Nickel-Aluminium Alloys and Resistance Elements made therefrom
Inventor: WILLIAMS KEITH JUXON
IPC: C22C1/04
Filed: 1968-05-17
Abstract: 1,165,115. Ni-A1 alloys. INTERNATIONAL NICKEL Ltd. May 17, 1968, No.23649/68. Headings C7A and C7D.  A process for the production of alloys suitable for use as a high temperature resistance element, comprises casting an alloy consisting of:- Al 25-35% and La and/or Ce up to 0À5% in total, the balance being Ni, comminuting it (e. g. by crushing and ball milling), compacting the powder, sintering the compact and then recompacting it (preferably by extrusion).
Patent GB-776049-A (GB)
Title: Improvements in sensitized photographic emulsions
IPC: G03C1/14
Filed: 1955-08-17
Abstract: 776,049. Supersensitized photographic emulsions. KODAK, Ltd. Aug. 17, 1955 [Aug. 23, 1954], No. 23657/55. Drawings to Specification. Class 98(2) A photographic silver halide emulsion is supersensitized with a combination of at least one dye of the formula:- wherein R and R 1  are alkyl or substituted alkyl groups, n is 0 or 1, X is an acid radical, Z and Z 1  complete heterocyclic nuclei and R 2  is an alkyl or aryl group or a 3-pyrryl, 3-indolyl, 2-indolyl or 1-pyrrocolyl group as defined in Specification 756,226 or a 6 : 7 - benz - 3 - indolyl group, and at least one dye of the formula:- wherein R, and R 8  are alkyl or allyl groups R, is Br, CH 3 CO- or C,H,NHCO- and X 1  is an acid radical. In the examples, R and R 1  are methyl or ethyl, R 2  is methyl, ethyl, phenyl, 2 : 5 - dimethyl - 1 - phenyl - 3 - pyrryl or 2 : 5 - dimethyl - 1 - ethyl - 3 - pyrryl, R, and R 8  are ethyl and Z or Z 1  complete 2 - quinoline, benzthiazole or naphthothiazole nuclei. Specifications 394,692 [Group IV], 498,031, 498,289, 498,290, 498,291, 533,425, 581,772, 760,991 and 776,050 also are referred to.
Patent GB-911877-A (GB)
Title: Improvements in or relating to rotary contact arms for high-frequency currents of high intensity
IPC: H01H1/62
Filed: 1961-06-30
Abstract: 911,877. Couplings between relatively movable conducting parts. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 30, 1961 [July 5, 1960], No. 23729/61. Class 38 (1). A rotary contact arm for high frequency high intensity currents comprises a part 1 which has means for fixing to a shaft 3 and a part 5 coaxially arranged and slidable with respect to the part 1, the parts being forced apart by means of a spring 19, so that a contact 7 on the part 5 engages a conductor 9 which may be a helical coil. The movable part 5 has contact fingers 25 engaging the part 1 and cooling fins 29 which are such that their radial length is considerably shorter at at least one point on their circumference to provide a short current path at this point. The surfaces of parts 15 and 21 preferably have a layer of silver to carry the currents, this layer having a protective covering of gold and the contact 7 is preferably of graphited silver. A metal bellows for contact between parts 1 and 5 is also mentioned.
Patent GB-240467-A (GB)
Title: A process and apparatus for the removal of the residue from furnaces, retorts, or the like
IPC: F23J1/02
Filed: 1925-09-23
Abstract: 240,467. Schwabach, M. Sept. 23, 1924, [Convention date]. Ashes and the like, removing. - Mechanical devices for removing ashes, slag or coke from quenching tanks are driven by water under pressure which may be merely the ordinary supply used to fill the tanks. A water supply pipe a leads to a valve chamber b; in the position of the valve c shown in Fig. 2 the water passes through a chainnel d' to a cylinder e and actuates a plunger f and rod g against a spring p. The rod g is connected with a lever h which, through a pawl i and ratchet-wheel k actuate an ashconveying blade-wheel m arranged in the quenching tank q. At the end of, its stroke the plunger f by means of reversing gear n shifts the valve c and is forced back by a spring p, the released water escaping by a channel i communicating with the quenching tank q. If the ashes &c. are to be conveyed away in a straight path, reciprocating motion only is employed, the pawl and ratchet gear h, i, k being omitted. The speed of the plunger can be varied by a valve in the pipe a. In steam boiler plants the pipe a may be connected through a pressure water storer to the feed-pumps, pre-heaters or to the boiler itself or the apparatus may be normally driven by the ordinary water supply and have means for connecting it to a high-pressure water supply when obstacles such as caked slag are met. Obstacles may also be overcome by manual working of the lever h.
Patent GB-422227-A (GB)
Title: Improved method and means for dressing revolving grinding wheels
IPC: B24B53/08
Filed: 1933-08-29
Abstract: 422,227. Trueing grinding wheels. ATKINS, H. F., Old Fletton, Peterborough. Aug. 29, 1933, No. 23897. [Classes 60 and 124] Apparatus for dressing the working surface of a grinding-wheel to any desired shape consists of two compound slides E, F, one of the members of the slide E carrying a stylus moved over a former having the desired outline, and a member of the slide F carrying a diamond for shaping the wheel and being moved by crank &c. gearing by movements of the slide E. The apparatus comprises a frame 1 upon which is movable in antifriction bearings 2 a slide 3 carrying in antifriction bearings 6 a transversely movable slide 5 on which is mounted a stylus 7 movable over a former 8, 9. The slide 5 has a part 11 in which is a slot 12 engaging a key 15 in a slide 14 movable in the frame 1 parallel to the movement of the slide 5 on the slide 3, and carried by the slide 14 is a bar 16 having a groove 17 inclined at an angle which may be adjusted by a pin 51 and holes 47-50 to the direction of movement of the slides. In the groove 17 is movable a slide-block 18 carried by a crank-pin 19 of a crank 20 whose shaft 21 is mounted in the frame 1, the lower end of the shaft carrying a crank 22. The crankpin 21 of crank 22 carries a slide-block 24 in a groove 25 in a slide 26 movable parallel to the slide 3 in antifriction bearings 27, and on the slide 26 is movable at right-angles thereto, a slide 38 carrying a dressing-tool 40, which is a reduced shape replica of the stylus 7. The slide 38 is movable by a slideblock 36 movable in a groove 37 and carried by a crank-pin 35 on a shaft 33 movable by a crank operated by an adjustably inclined groove 29 in a bar 28 carried by the slide 3. In operation, on movement of the stylus over the former, the dressing-tool moves over the operative face of the grinding-wheel 42, in a path which is a replica of the path traced by the stylus, but to a reduced scale. The scale may be varied by adjustment of the angle of the grooves 17, 29 or by adjustment of the throws of the cranks ; the grooves 17, 29 may be at different angles. Specifications 377,350 and 390,991 are referred to.
Patent GB-936154-A (GB)
Title: Improvements in and relating to polyvinyl chloride compositions
Inventor: REED HUGH WILMA BOULTON
IPC: C08K5/13
Filed: 1960-07-08
Abstract: Stabilized polyvinyl chloride compositions comprise a tris hydroxyaryl alkane, which may be substituted.  Such alkanes are the nonresinous products of the condensation of one mole of an aldehyde having an alpha-beta double bond and an unsubstituted alpha carbon atom with three moles of a hydroxyaryl compound with a free o- or p-position adjacent an -OH group.  Optional ingredients mentioned are plasticizers, e.g. phthalic esters of 3,5,5-trimethylhexanol, of a proprietary mixture of C7-9 branched alcohols, or of C8 10 13 alcohols; cadmium or calcium stearate; basic lead carbonate or sulphate; stearic acid; and bentonite.  The compositions may be used for electrical insulation.